1113B201

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Trimmer Potentiometers

A trimmer potentiometer, also known as a variable resistor or a preset, is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. Trimmer potentiometers are typically used to adjust circuit parameterspredefined settings that are difficult to change once the circuit is assembled.The 1113B201 is a mechanical trimmer potentiometer, featuring single-turn adjustment, with an endurance rating of 15,000 cycles. It has an adjustable resistance range of 500Ω, and its rated power is 0.055W. The physical design of the 1113B201 consists of a cermet element, ceramic substrate, housing and terminals. The pins of the 1113B201 are 2mm in length, with a pin diameter of 0.6mm, while the housing is designed for surface mounting.

Applications

Trimmer potentiometers are often used for volume control in audio devices and for adjusting preset values in electronic equipment such as televisions, radios, and amplifiers. The 1113B201 trimmer potentiometer is also used in automotive applications such as radio navigation systems, air conditioning systems, and cruise control units. Furthermore, this device is used in a variety of industrial and medical devices such as automatic door openings, induction motor speed controls, cardiac monitors, oxygen concentrators, and breathalyzers.

Working Principle

The working principle of the 1113B201 trimmer potentiometer is based on a simple voltage divider. When the slider is moved, it alters the voltage drop across the resistance and thus the output voltage of the potentiometer. The input voltage is divided between the resistance element and the slider. The output voltage is proportional to the position of the slider and varies linearly depending on the applied voltage.

The resistance of the 1113B201 trimmer potentiometer can be adjusted by using a screwdriver to turn the adjustment screw in either direction. This will raise or lower the value of the resistor depending on the direction. The adjustment screw can be used to fine-tune the resistance or to reset it to its default state.

The 1113B201 is a single-turn device, which means that the slider needs to be swept through a full rotation before the preset resistance is reached. This requires accurate adjustment, as the resistance the slider has moved through is inversely proportional to the output voltage.

In summary, the 1113B201 trimmer potentiometer is a three-terminal resistive device with a sliding contact that forms a voltage divider. Its applications include automotive, industrial, and medical applications such as volume controls, radio navigation systems, motor speed controls, and oxygen concentrators. The working principle of the 1113B201 is based on a simple voltage divider that adjusts the resistance and, consequently, the output voltage of the device when the slider is moved.

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